Hymn of praise in the Catholic mass (6)

I believe the answer is:

gloria

(Other definitions for gloria that I've seen before include "Doxology" , "piece of church music" , "Prayer: '... in excelsis Deo'" , "Latin glory - as in excelsis Deo" , "Latin hymn: ''. . . . . . in excelsis Deo''" .)

I've seen this clue in The Guardian.

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